Cos^2x-cosx=0 решите

Question

Cos^2x-cosx=0 решите

Answer 1

Cosx(Cosx-1)=0
Cosx=0 или Cosx-1 = 0
1. x=pi/2+pi*k
2. Cosx = 1
    x= 2pi*k

Comments

в 1 pi/2+pi*k